MySQL  8.0.18
Source Code Documentation
mysql_com.h
Go to the documentation of this file.
1 /* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
2 
3  This program is free software; you can redistribute it and/or modify
4  it under the terms of the GNU General Public License, version 2.0,
5  as published by the Free Software Foundation.
6 
7  This program is also distributed with certain software (including
8  but not limited to OpenSSL) that is licensed under separate terms,
9  as designated in a particular file or component or in included license
10  documentation. The authors of MySQL hereby grant you an additional
11  permission to link the program and your derivative works with the
12  separately licensed software that they have included with MySQL.
13 
14  Without limiting anything contained in the foregoing, this file,
15  which is part of C Driver for MySQL (Connector/C), is also subject to the
16  Universal FOSS Exception, version 1.0, a copy of which can be found at
17  http://oss.oracle.com/licenses/universal-foss-exception.
18 
19  This program is distributed in the hope that it will be useful,
20  but WITHOUT ANY WARRANTY; without even the implied warranty of
21  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22  GNU General Public License, version 2.0, for more details.
23 
24  You should have received a copy of the GNU General Public License
25  along with this program; if not, write to the Free Software
26  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
27 
28 /**
29  @file include/mysql_com.h
30  Common definition between mysql server & client.
31 */
32 
33 #ifndef _mysql_com_h
34 #define _mysql_com_h
35 
36 #ifndef MYSQL_ABI_CHECK
37 #include <stdbool.h>
38 #include <stdint.h>
39 #endif
40 
41 #include "my_command.h"
42 #include "my_compress.h"
43 
44 /*
45  We need a definition for my_socket. On the client, <mysql.h> already provides
46  it, but on the server side, we need to get it from a header.
47 */
48 #ifndef my_socket_defined
49 #include "my_io.h"
51 #endif
52 
53 #ifndef MYSQL_ABI_CHECK
54 #include <stdbool.h>
55 #endif
56 
57 #define SYSTEM_CHARSET_MBMAXLEN 3
58 #define FILENAME_CHARSET_MBMAXLEN 5
59 #define NAME_CHAR_LEN 64 /**< Field/table name length */
60 #define PARTITION_EXPR_CHAR_LEN \
61  2048 /**< Maximum expression length in chars \
62  */
63 #define USERNAME_CHAR_LENGTH 32
64 #define USERNAME_CHAR_LENGTH_STR "32"
65 #ifndef NAME_LEN
66 #define NAME_LEN (NAME_CHAR_LEN * SYSTEM_CHARSET_MBMAXLEN)
67 #endif
68 #define USERNAME_LENGTH (USERNAME_CHAR_LENGTH * SYSTEM_CHARSET_MBMAXLEN)
69 #define CONNECT_STRING_MAXLEN 1024
70 
71 #define MYSQL_AUTODETECT_CHARSET_NAME "auto"
72 
73 #define SERVER_VERSION_LENGTH 60
74 #define SQLSTATE_LENGTH 5
75 
76 /**
77  Maximum length of comments
78 
79  pre 5.6: 60 characters
80 */
81 #define TABLE_COMMENT_INLINE_MAXLEN 180
82 #define TABLE_COMMENT_MAXLEN 2048
83 #define COLUMN_COMMENT_MAXLEN 1024
84 #define INDEX_COMMENT_MAXLEN 1024
85 #define TABLE_PARTITION_COMMENT_MAXLEN 1024
86 #define TABLESPACE_COMMENT_MAXLEN 2048
87 
88 /**
89  Maximum length of protocol packet.
90  @ref page_protocol_basic_ok_packet length limit also restricted to this value
91  as any length greater than this value will have first byte of
92  @ref page_protocol_basic_ok_packet to be 254 thus does not
93  provide a means to identify if this is @ref page_protocol_basic_ok_packet or
94  @ref page_protocol_basic_eof_packet.
95 */
96 #define MAX_PACKET_LENGTH (256L * 256L * 256L - 1)
97 
98 #define LOCAL_HOST "localhost"
99 #define LOCAL_HOST_NAMEDPIPE "."
101 #if defined(_WIN32)
102 #define MYSQL_NAMEDPIPE "MySQL"
103 #define MYSQL_SERVICENAME "MySQL"
104 #endif /* _WIN32 */
105 
106 /** The length of the header part for each generated column in the .frm file.*/
107 #define FRM_GCOL_HEADER_SIZE 4
108 /**
109  Maximum length of the expression statement defined for generated columns.
110 */
111 #define GENERATED_COLUMN_EXPRESSION_MAXLEN 65535 - FRM_GCOL_HEADER_SIZE
112 /**
113  Length of random string sent by server on handshake; this is also length of
114  obfuscated password, received from client
115 */
116 #define SCRAMBLE_LENGTH 20
117 #define AUTH_PLUGIN_DATA_PART_1_LENGTH 8
118 /** length of password stored in the db: new passwords are preceeded with '*'*/
119 #define SCRAMBLED_PASSWORD_CHAR_LENGTH (SCRAMBLE_LENGTH * 2 + 1)
121 /**
122  @defgroup group_cs_column_definition_flags Column Definition Flags
123  @ingroup group_cs
124 
125  @brief Values for the flags bitmask used by ::Send_field:flags
126 
127  Currently need to fit into 32 bits.
128 
129  Each bit represents an optional feature of the protocol.
130 
131  Both the client and the server are sending these.
132 
133  The intersection of the two determines what optional parts of the
134  protocol will be used.
135 */
136 
137 /**
138  @addtogroup group_cs_column_definition_flags
139  @{
140 */
141 
142 #define NOT_NULL_FLAG 1 /**< Field can't be NULL */
143 #define PRI_KEY_FLAG 2 /**< Field is part of a primary key */
144 #define UNIQUE_KEY_FLAG 4 /**< Field is part of a unique key */
145 #define MULTIPLE_KEY_FLAG 8 /**< Field is part of a key */
146 #define BLOB_FLAG 16 /**< Field is a blob */
147 #define UNSIGNED_FLAG 32 /**< Field is unsigned */
148 #define ZEROFILL_FLAG 64 /**< Field is zerofill */
149 #define BINARY_FLAG 128 /**< Field is binary */
151 /* The following are only sent to new clients */
152 #define ENUM_FLAG 256 /**< field is an enum */
153 #define AUTO_INCREMENT_FLAG 512 /**< field is a autoincrement field */
154 #define TIMESTAMP_FLAG 1024 /**< Field is a timestamp */
155 #define SET_FLAG 2048 /**< field is a set */
156 #define NO_DEFAULT_VALUE_FLAG 4096 /**< Field doesn't have default value */
157 #define ON_UPDATE_NOW_FLAG 8192 /**< Field is set to NOW on UPDATE */
158 #define NUM_FLAG 32768 /**< Field is num (for clients) */
159 #define PART_KEY_FLAG 16384 /**< Intern; Part of some key */
160 #define GROUP_FLAG 32768 /**< Intern: Group field */
161 #define UNIQUE_FLAG 65536 /**< Intern: Used by sql_yacc */
162 #define BINCMP_FLAG 131072 /**< Intern: Used by sql_yacc */
163 #define GET_FIXED_FIELDS_FLAG \
164  (1 << 18) /**< Used to get fields in item tree \
165  */
166 #define FIELD_IN_PART_FUNC_FLAG (1 << 19) /**< Field part of partition func */
167 /**
168  Intern: Field in TABLE object for new version of altered table,
169  which participates in a newly added index.
170 */
171 #define FIELD_IN_ADD_INDEX (1 << 20)
172 #define FIELD_IS_RENAMED (1 << 21) /**< Intern: Field is being renamed */
173 #define FIELD_FLAGS_STORAGE_MEDIA 22 /**< Field storage media, bit 22-23 */
174 #define FIELD_FLAGS_STORAGE_MEDIA_MASK (3 << FIELD_FLAGS_STORAGE_MEDIA)
175 #define FIELD_FLAGS_COLUMN_FORMAT 24 /**< Field column format, bit 24-25 */
176 #define FIELD_FLAGS_COLUMN_FORMAT_MASK (3 << FIELD_FLAGS_COLUMN_FORMAT)
177 #define FIELD_IS_DROPPED (1 << 26) /**< Intern: Field is being dropped */
178 #define EXPLICIT_NULL_FLAG \
179  (1 << 27) /**< Field is explicitly specified as \
180  NULL by the user */
181 #define FIELD_IS_MARKED \
182  (1 << 28) /**< Intern: field is marked, \
183  general purpose */
185 /** Field will not be loaded in secondary engine. */
186 #define NOT_SECONDARY_FLAG (1 << 29)
187 
188 /** @}*/
189 
190 /**
191  @defgroup group_cs_com_refresh_flags COM_REFRESH Flags
192  @ingroup group_cs
193 
194  @brief Values for the `sub_command` in ::COM_REFRESH
195 
196  Currently the protocol carries only 8 bits of these flags.
197 
198  The rest (8-end) are used only internally in the server.
199 */
200 
201 /**
202  @addtogroup group_cs_com_refresh_flags
203  @{
204 */
205 
206 #define REFRESH_GRANT 1 /**< Refresh grant tables, FLUSH PRIVILEGES */
207 #define REFRESH_LOG 2 /**< Start on new log file, FLUSH LOGS */
208 #define REFRESH_TABLES 4 /**< close all tables, FLUSH TABLES */
209 #define REFRESH_HOSTS 8 /**< Flush host cache, FLUSH HOSTS */
210 #define REFRESH_STATUS 16 /**< Flush status variables, FLUSH STATUS */
211 #define REFRESH_THREADS 32 /**< Flush thread cache */
212 #define REFRESH_SLAVE \
213  64 /**< Reset master info and restart slave \
214  thread, RESET SLAVE */
215 #define REFRESH_MASTER \
216  128 /**< Remove all bin logs in the index \
217  and truncate the index, RESET MASTER */
218 #define REFRESH_ERROR_LOG 256 /**< Rotate only the erorr log */
219 #define REFRESH_ENGINE_LOG 512 /**< Flush all storage engine logs */
220 #define REFRESH_BINARY_LOG 1024 /**< Flush the binary log */
221 #define REFRESH_RELAY_LOG 2048 /**< Flush the relay log */
222 #define REFRESH_GENERAL_LOG 4096 /**< Flush the general log */
223 #define REFRESH_SLOW_LOG 8192 /**< Flush the slow query log */
224 #define REFRESH_READ_LOCK 16384 /**< Lock tables for read. */
225 /**
226  Wait for an impending flush before closing the tables.
228  @sa REFRESH_READ_LOCK, handle_reload_request, close_cached_tables
229 */
230 #define REFRESH_FAST 32768
231 #define REFRESH_USER_RESOURCES 0x80000L /** FLISH RESOUCES. @sa ::reset_mqh */
232 #define REFRESH_FOR_EXPORT 0x100000L /** FLUSH TABLES ... FOR EXPORT */
233 #define REFRESH_OPTIMIZER_COSTS 0x200000L /** FLUSH OPTIMIZER_COSTS */
234 #define REFRESH_PERSIST 0x400000L /** RESET PERSIST */
235 
236 /** @}*/
238 /**
239  @defgroup group_cs_capabilities_flags Capabilities Flags
240  @ingroup group_cs
241 
242  @brief Values for the capabilities flag bitmask used by the MySQL protocol
243 
244  Currently need to fit into 32 bits.
245 
246  Each bit represents an optional feature of the protocol.
247 
248  Both the client and the server are sending these.
249 
250  The intersection of the two determines whast optional parts of the
251  protocol will be used.
252 */
253 
254 /**
255  @addtogroup group_cs_capabilities_flags
256  @{
257 */
258 
259 /**
260  Use the improved version of Old Password Authentication.
261 
262  Not used.
263 
264  @note Assumed to be set since 4.1.1.
265 */
266 #define CLIENT_LONG_PASSWORD 1
267 /**
268  Send found rows instead of affected rows in @ref
269  page_protocol_basic_eof_packet
270 */
271 #define CLIENT_FOUND_ROWS 2
272 /**
273  @brief Get all column flags
274 
275  Longer flags in Protocol::ColumnDefinition320.
276 
277  @todo Reference Protocol::ColumnDefinition320
278 
279  Server
280  ------
281 
282  Supports longer flags.
283 
284  Client
285  ------
286 
287  Expects longer flags.
288 */
289 #define CLIENT_LONG_FLAG 4
290 /**
291  Database (schema) name can be specified on connect in Handshake Response
292  Packet.
293 
294  @todo Reference Handshake Response Packet.
296  Server
297  ------
298 
299  Supports schema-name in Handshake Response Packet.
300 
301  Client
302  ------
303 
304  Handshake Response Packet contains a schema-name.
305 
306  @sa send_client_reply_packet()
307 */
308 #define CLIENT_CONNECT_WITH_DB 8
309 #define CLIENT_NO_SCHEMA 16 /**< Don't allow database.table.column */
310 /**
311  Compression protocol supported.
312 
313  @todo Reference Compression
315  Server
316  ------
317 
318  Supports compression.
319 
320  Client
321  ------
322 
323  Switches to Compression compressed protocol after successful authentication.
324 */
325 #define CLIENT_COMPRESS 32
326 /**
327  Special handling of ODBC behavior.
328 
329  @note No special behavior since 3.22.
330 */
331 #define CLIENT_ODBC 64
332 /**
333  Can use LOAD DATA LOCAL.
334 
335  Server
336  ------
338  Enables the LOCAL INFILE request of LOAD DATA|XML.
339 
340  Client
341  ------
342 
343  Will handle LOCAL INFILE request.
344 */
345 #define CLIENT_LOCAL_FILES 128
346 /**
347  Ignore spaces before '('
348 
349  Server
350  ------
352  Parser can ignore spaces before '('.
353 
354  Client
355  ------
356 
357  Let the parser ignore spaces before '('.
358 */
359 #define CLIENT_IGNORE_SPACE 256
360 /**
361  New 4.1 protocol
362 
363  @todo Reference the new 4.1 protocol
364 
365  Server
366  ------
367 
368  Supports the 4.1 protocol.
369 
370  Client
371  ------
372 
373  Uses the 4.1 protocol.
374 
375  @note this value was CLIENT_CHANGE_USER in 3.22, unused in 4.0
376 */
377 #define CLIENT_PROTOCOL_41 512
378 /**
379  This is an interactive client
380 
381  Use @ref System_variables::net_wait_timeout
382  versus @ref System_variables::net_interactive_timeout.
384  Server
385  ------
386 
387  Supports interactive and noninteractive clients.
388 
389  Client
390  ------
391 
392  Client is interactive.
393 
394  @sa mysql_real_connect()
395 */
396 #define CLIENT_INTERACTIVE 1024
397 /**
398  Use SSL encryption for the session
399 
400  @todo Reference SSL
401 
402  Server
403  ------
404 
405  Supports SSL
406 
407  Client
408  ------
409 
410  Switch to SSL after sending the capability-flags.
411 */
412 #define CLIENT_SSL 2048
413 /**
414  Client only flag. Not used.
415 
416  Client
417  ------
419  Do not issue SIGPIPE if network failures occur (libmysqlclient only).
420 
421  @sa mysql_real_connect()
422 */
423 #define CLIENT_IGNORE_SIGPIPE 4096
424 /**
425  Client knows about transactions
426 
427  Server
428  ------
430  Can send status flags in @ref page_protocol_basic_ok_packet /
431  @ref page_protocol_basic_eof_packet.
432 
433  Client
434  ------
435 
436  Expects status flags in @ref page_protocol_basic_ok_packet /
437  @ref page_protocol_basic_eof_packet.
438 
439  @note This flag is optional in 3.23, but always set by the server since 4.0.
440  @sa send_server_handshake_packet(), parse_client_handshake_packet(),
441  net_send_ok(), net_send_eof()
442 */
443 #define CLIENT_TRANSACTIONS 8192
444 #define CLIENT_RESERVED 16384 /**< DEPRECATED: Old flag for 4.1 protocol */
445 #define CLIENT_RESERVED2 \
446  32768 /**< DEPRECATED: Old flag for 4.1 authentication \
447  CLIENT_SECURE_CONNECTION */
448 /**
449  Enable/disable multi-stmt support
451  Also sets @ref CLIENT_MULTI_RESULTS. Currently not checked anywhere.
452 
453  Server
454  ------
455 
456  Can handle multiple statements per COM_QUERY and COM_STMT_PREPARE.
457 
458  Client
459  -------
460 
461  May send multiple statements per COM_QUERY and COM_STMT_PREPARE.
462 
463  @note Was named ::CLIENT_MULTI_QUERIES in 4.1.0, renamed later.
464 
465  Requires
466  --------
467 
468  ::CLIENT_PROTOCOL_41
469 
470  @todo Reference COM_QUERY and COM_STMT_PREPARE
471 */
472 #define CLIENT_MULTI_STATEMENTS (1UL << 16)
473 /**
474  Enable/disable multi-results
475 
476  Server
477  ------
478 
479  Can send multiple resultsets for COM_QUERY.
480  Error if the server needs to send them and client
481  does not support them.
482 
483  Client
484  -------
485 
486  Can handle multiple resultsets for COM_QUERY.
487 
488  Requires
489  --------
490 
491  ::CLIENT_PROTOCOL_41
492 
493  @sa mysql_execute_command(), sp_head::MULTI_RESULTS
494 */
495 #define CLIENT_MULTI_RESULTS (1UL << 17)
496 /**
497  Multi-results and OUT parameters in PS-protocol.
498 
499  Server
500  ------
501 
502  Can send multiple resultsets for COM_STMT_EXECUTE.
503 
504  Client
505  ------
506 
507  Can handle multiple resultsets for COM_STMT_EXECUTE.
508 
509  Requires
510  --------
511 
512  ::CLIENT_PROTOCOL_41
513 
514  @todo Reference COM_STMT_EXECUTE and PS-protocol
515 
516  @sa Protocol_binary::send_out_parameters
517 */
518 #define CLIENT_PS_MULTI_RESULTS (1UL << 18)
519 
520 /**
521  Client supports plugin authentication
522 
523  Server
524  ------
526  Sends extra data in Initial Handshake Packet and supports the pluggable
527  authentication protocol.
528 
529  Client
530  ------
531 
532  Supports authentication plugins.
533 
534  Requires
535  --------
536 
537  ::CLIENT_PROTOCOL_41
538 
539  @todo Reference plugin authentication, Initial Handshake Packet,
540  Authentication plugins
541 
542  @sa send_change_user_packet(), send_client_reply_packet(), run_plugin_auth(),
543  parse_com_change_user_packet(), parse_client_handshake_packet()
544 */
545 #define CLIENT_PLUGIN_AUTH (1UL << 19)
546 /**
547  Client supports connection attributes
548 
549  Server
550  ------
551 
552  Permits connection attributes in Protocol::HandshakeResponse41.
553 
554  Client
555  ------
556 
557  Sends connection attributes in Protocol::HandshakeResponse41.
558 
559  @todo Reference Protocol::HandshakeResponse41
560 
561  @sa send_client_connect_attrs(), read_client_connect_attrs()
562 */
563 #define CLIENT_CONNECT_ATTRS (1UL << 20)
564 
565 /**
566  Enable authentication response packet to be larger than 255 bytes.
567 
568  When the ability to change default plugin require that the initial password
569  field in the Protocol::HandshakeResponse41 paclet can be of arbitrary size.
570  However, the 4.1 client-server protocol limits the length of the
571  auth-data-field sent from client to server to 255 bytes.
572  The solution is to change the type of the field to a true length encoded
573  string and indicate the protocol change
574  with this client capability flag.
575 
576  Server
577  ------
578 
579  Understands length-encoded integer for auth response data in
580  Protocol::HandshakeResponse41.
581 
582  Client
583  ------
584 
585  Length of auth response data in Protocol::HandshakeResponse41
586  is a length-encoded integer.
587 
588  @todo Reference Protocol::HandshakeResponse41
589 
590  @note The flag was introduced in 5.6.6, but had the wrong value.
591 
592  @sa send_client_reply_packet(), parse_client_handshake_packet(),
593  get_56_lenc_string(), get_41_lenc_string()
594 */
595 #define CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA (1UL << 21)
596 
597 /**
598  Don't close the connection for a user account with expired password.
599 
600  Server
601  ------
603  Announces support for expired password extension.
604 
605  Client
606  ------
607 
608  Can handle expired passwords.
609 
610  @todo Reference expired password
611 
612  @sa MYSQL_OPT_CAN_HANDLE_EXPIRED_PASSWORDS, disconnect_on_expired_password
613  ACL_USER::password_expired, check_password_lifetime(), acl_authenticate()
614 */
615 #define CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS (1UL << 22)
616 
617 /**
618  Capable of handling server state change information. Its a hint to the
619  server to include the state change information in
620  @ref page_protocol_basic_ok_packet.
621 
622  Server
623  ------
624  Can set ::SERVER_SESSION_STATE_CHANGED in the ::SERVER_STATUS_flags_enum
625  and send @ref sect_protocol_basic_ok_packet_sessinfo in a
626  @ref page_protocol_basic_ok_packet.
627 
628  Client
629  ------
630 
631  Expects the server to send @ref sect_protocol_basic_ok_packet_sessinfo in
632  a @ref page_protocol_basic_ok_packet.
633 
634  @sa enum_session_state_type, read_ok_ex(), net_send_ok(), Session_tracker,
635  State_tracker
636 */
637 #define CLIENT_SESSION_TRACK (1UL << 23)
638 /**
639  Client no longer needs @ref page_protocol_basic_eof_packet and will
640  use @ref page_protocol_basic_ok_packet instead.
641  @sa net_send_ok()
642 
643  Server
644  ------
645 
646  Can send OK after a Text Resultset.
647 
648  Client
649  ------
650 
651  Expects an @ref page_protocol_basic_ok_packet (instead of
652  @ref page_protocol_basic_eof_packet) after the resultset rows of a
653  Text Resultset.
654 
655  Background
656  ----------
657 
658  To support ::CLIENT_SESSION_TRACK, additional information must be sent after
659  all successful commands. Although the @ref page_protocol_basic_ok_packet is
660  extensible, the @ref page_protocol_basic_eof_packet is not due to the overlap
661  of its bytes with the content of the Text Resultset Row.
662 
663  Therefore, the @ref page_protocol_basic_eof_packet in the
664  Text Resultset is replaced with an @ref page_protocol_basic_ok_packet.
665  @ref page_protocol_basic_eof_packet is deprecated as of MySQL 5.7.5.
666 
667  @todo Reference Text Resultset
668 
669  @sa cli_safe_read_with_ok(), read_ok_ex(), net_send_ok(), net_send_eof()
670 */
671 #define CLIENT_DEPRECATE_EOF (1UL << 24)
672 
673 /**
674  Verify server certificate.
675 
676  Client only flag.
677 
678  @deprecated in favor of --ssl-mode.
679 */
680 #define CLIENT_SSL_VERIFY_SERVER_CERT (1UL << 30)
681 
682 /**
683  The client can handle optional metadata information in the resultset.
684 */
685 #define CLIENT_OPTIONAL_RESULTSET_METADATA (1UL << 25)
686 
687 /**
688  Compression protocol extended to support zstd compression method
689 
690  This capability flag is used to send zstd compression level between
691  client and server provided both client and server are enabled with
692  this flag.
693 
694  Server
695  ------
696  Server sets this flag when global variable protocol-compression-algorithms
697  has zstd in its list of supported values.
698 
699  Client
700  ------
701  Client sets this flag when it is configured to use zstd compression method.
702 
703 */
704 #define CLIENT_ZSTD_COMPRESSION_ALGORITHM (1UL << 26)
705 
706 /**
707  This flag will be reserved to extend the 32bit capabilities structure to
708  64bits.
709 */
710 #define CLIENT_CAPABILITY_EXTENSION (1UL << 29)
711 /**
712  Don't reset the options after an unsuccessful connect
713 
714  Client only flag.
715 
716  Typically passed via ::mysql_real_connect() 's client_flag parameter.
718  @sa mysql_real_connect()
719 */
720 #define CLIENT_REMEMBER_OPTIONS (1UL << 31)
721 /** @}*/
722 
723 /** a compatibility alias for CLIENT_COMPRESS */
724 #define CAN_CLIENT_COMPRESS CLIENT_COMPRESS
725 
726 /** Gather all possible capabilites (flags) supported by the server */
727 #define CLIENT_ALL_FLAGS \
728  (CLIENT_LONG_PASSWORD | CLIENT_FOUND_ROWS | CLIENT_LONG_FLAG | \
729  CLIENT_CONNECT_WITH_DB | CLIENT_NO_SCHEMA | CLIENT_COMPRESS | CLIENT_ODBC | \
730  CLIENT_LOCAL_FILES | CLIENT_IGNORE_SPACE | CLIENT_PROTOCOL_41 | \
731  CLIENT_INTERACTIVE | CLIENT_SSL | CLIENT_IGNORE_SIGPIPE | \
732  CLIENT_TRANSACTIONS | CLIENT_RESERVED | CLIENT_RESERVED2 | \
733  CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS | CLIENT_PS_MULTI_RESULTS | \
734  CLIENT_SSL_VERIFY_SERVER_CERT | CLIENT_REMEMBER_OPTIONS | \
735  CLIENT_PLUGIN_AUTH | CLIENT_CONNECT_ATTRS | \
736  CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA | \
737  CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS | CLIENT_SESSION_TRACK | \
738  CLIENT_DEPRECATE_EOF | CLIENT_OPTIONAL_RESULTSET_METADATA | \
739  CLIENT_ZSTD_COMPRESSION_ALGORITHM)
740 
741 /**
742  Switch off from ::CLIENT_ALL_FLAGS the flags that are optional and
743  depending on build flags.
744  If any of the optional flags is supported by the build it will be switched
745  on before sending to the client during the connection handshake.
746 */
747 #define CLIENT_BASIC_FLAGS \
748  (CLIENT_ALL_FLAGS & \
749  ~(CLIENT_SSL | CLIENT_COMPRESS | CLIENT_SSL_VERIFY_SERVER_CERT | \
750  CLIENT_ZSTD_COMPRESSION_ALGORITHM))
751 
752 /** The status flags are a bit-field */
754  /**
755  Is raised when a multi-statement transaction
756  has been started, either explicitly, by means
757  of BEGIN or COMMIT AND CHAIN, or
758  implicitly, by the first transactional
759  statement, when autocommit=off.
760  */
762  SERVER_STATUS_AUTOCOMMIT = 2, /**< Server in auto_commit mode */
763  SERVER_MORE_RESULTS_EXISTS = 8, /**< Multi query - next query exists */
766  /**
767  The server was able to fulfill the clients request and opened a
768  read-only non-scrollable cursor for a query. This flag comes
769  in reply to COM_STMT_EXECUTE and COM_STMT_FETCH commands.
770  Used by Binary Protocol Resultset to signal that COM_STMT_FETCH
771  must be used to fetch the row-data.
772  @todo Refify "Binary Protocol Resultset" and "COM_STMT_FETCH".
773  */
775  /**
776  This flag is sent when a read-only cursor is exhausted, in reply to
777  COM_STMT_FETCH command.
778  */
780  SERVER_STATUS_DB_DROPPED = 256, /**< A database was dropped */
782  /**
783  Sent to the client if after a prepared statement reprepare
784  we discovered that the new statement returns a different
785  number of result set columns.
786  */
789  /**
790  To mark ResultSet containing output parameter values.
791  */
792  SERVER_PS_OUT_PARAMS = 4096,
793 
794  /**
795  Set at the same time as SERVER_STATUS_IN_TRANS if the started
796  multi-statement transaction is a read-only transaction. Cleared
797  when the transaction commits or aborts. Since this flag is sent
798  to clients in OK and EOF packets, the flag indicates the
799  transaction status at the end of command execution.
800  */
802 
803  /**
804  This status flag, when on, implies that one of the state information has
805  changed on the server because of the execution of the last statement.
806  */
807  SERVER_SESSION_STATE_CHANGED = (1UL << 14)
808 };
809 
810 /**
811  Server status flags that must be cleared when starting
812  execution of a new SQL statement.
813  Flags from this set are only added to the
814  current server status by the execution engine, but
815  never removed -- the execution engine expects them
816  to disappear automagically by the next command.
817 */
818 #define SERVER_STATUS_CLEAR_SET \
819  (SERVER_QUERY_NO_GOOD_INDEX_USED | SERVER_QUERY_NO_INDEX_USED | \
820  SERVER_MORE_RESULTS_EXISTS | SERVER_STATUS_METADATA_CHANGED | \
821  SERVER_QUERY_WAS_SLOW | SERVER_STATUS_DB_DROPPED | \
822  SERVER_STATUS_CURSOR_EXISTS | SERVER_STATUS_LAST_ROW_SENT | \
823  SERVER_SESSION_STATE_CHANGED)
824 
825 /** Max length of a error message. Should be kept in sync with ::ERRMSGSIZE. */
826 #define MYSQL_ERRMSG_SIZE 512
827 #define NET_READ_TIMEOUT 30 /**< Timeout on read */
828 #define NET_WRITE_TIMEOUT 60 /**< Timeout on write */
829 #define NET_WAIT_TIMEOUT 8 * 60 * 60 /**< Wait for new query */
830 
831 /**
832  Flag used by the parser. Kill only the query and not the connection.
834  @sa SQLCOM_KILL, sql_kill(), LEX::type
835 */
836 #define ONLY_KILL_QUERY 1
837 
838 #ifndef MYSQL_VIO
839 struct Vio;
840 #define MYSQL_VIO struct Vio *
841 #endif
842 
843 #define MAX_TINYINT_WIDTH 3 /**< Max width for a TINY w.o. sign */
844 #define MAX_SMALLINT_WIDTH 5 /**< Max width for a SHORT w.o. sign */
845 #define MAX_MEDIUMINT_WIDTH 8 /**< Max width for a INT24 w.o. sign */
846 #define MAX_INT_WIDTH 10 /**< Max width for a LONG w.o. sign */
847 #define MAX_BIGINT_WIDTH 20 /**< Max width for a LONGLONG */
848 #define MAX_CHAR_WIDTH 255 /**< Max length for a CHAR colum */
849 #define MAX_BLOB_WIDTH 16777216 /**< Default width for blob */
851 typedef struct NET {
853  unsigned char *buff, *buff_end, *write_pos, *read_pos;
854  my_socket fd; /* For Perl DBI/dbd */
855  /**
856  Set if we are doing several queries in one
857  command ( as in LOAD TABLE ... FROM MASTER ),
858  and do not want to confuse the client with OK at the wrong time
859  */
861  unsigned long max_packet, max_packet_size;
862  unsigned int pkt_nr, compress_pkt_nr;
863  unsigned int write_timeout, read_timeout, retry_count;
864  int fcntl;
865  unsigned int *return_status;
866  unsigned char reading_or_writing;
867  unsigned char save_char;
868  bool compress;
869  unsigned int last_errno;
870  unsigned char error;
871  /** Client library error message buffer. Actually belongs to struct MYSQL. */
873  /** Client library sqlstate buffer. Set along with the error message. */
875  /**
876  Extension pointer, for the caller private use.
877  Any program linking with the networking library can use this pointer,
878  which is handy when private connection specific data needs to be
879  maintained.
880  The mysqld server process uses this pointer internally,
881  to maintain the server internal instrumentation for the connection.
882  */
883  void *extension;
884 } NET;
885 
886 #define packet_error (~(unsigned long)0)
887 
888 /**
889  @addtogroup group_cs_backward_compatibility Backward compatibility
890  @ingroup group_cs
891  @{
892 */
893 #define CLIENT_MULTI_QUERIES CLIENT_MULTI_STATEMENTS
894 #define FIELD_TYPE_DECIMAL MYSQL_TYPE_DECIMAL
895 #define FIELD_TYPE_NEWDECIMAL MYSQL_TYPE_NEWDECIMAL
896 #define FIELD_TYPE_TINY MYSQL_TYPE_TINY
897 #define FIELD_TYPE_SHORT MYSQL_TYPE_SHORT
898 #define FIELD_TYPE_LONG MYSQL_TYPE_LONG
899 #define FIELD_TYPE_FLOAT MYSQL_TYPE_FLOAT
900 #define FIELD_TYPE_DOUBLE MYSQL_TYPE_DOUBLE
901 #define FIELD_TYPE_NULL MYSQL_TYPE_NULL
902 #define FIELD_TYPE_TIMESTAMP MYSQL_TYPE_TIMESTAMP
903 #define FIELD_TYPE_LONGLONG MYSQL_TYPE_LONGLONG
904 #define FIELD_TYPE_INT24 MYSQL_TYPE_INT24
905 #define FIELD_TYPE_DATE MYSQL_TYPE_DATE
906 #define FIELD_TYPE_TIME MYSQL_TYPE_TIME
907 #define FIELD_TYPE_DATETIME MYSQL_TYPE_DATETIME
908 #define FIELD_TYPE_YEAR MYSQL_TYPE_YEAR
909 #define FIELD_TYPE_NEWDATE MYSQL_TYPE_NEWDATE
910 #define FIELD_TYPE_ENUM MYSQL_TYPE_ENUM
911 #define FIELD_TYPE_SET MYSQL_TYPE_SET
912 #define FIELD_TYPE_TINY_BLOB MYSQL_TYPE_TINY_BLOB
913 #define FIELD_TYPE_MEDIUM_BLOB MYSQL_TYPE_MEDIUM_BLOB
914 #define FIELD_TYPE_LONG_BLOB MYSQL_TYPE_LONG_BLOB
915 #define FIELD_TYPE_BLOB MYSQL_TYPE_BLOB
916 #define FIELD_TYPE_VAR_STRING MYSQL_TYPE_VAR_STRING
917 #define FIELD_TYPE_STRING MYSQL_TYPE_STRING
918 #define FIELD_TYPE_CHAR MYSQL_TYPE_TINY
919 #define FIELD_TYPE_INTERVAL MYSQL_TYPE_ENUM
920 #define FIELD_TYPE_GEOMETRY MYSQL_TYPE_GEOMETRY
921 #define FIELD_TYPE_BIT MYSQL_TYPE_BIT
922 /** @}*/
924 /**
925  @addtogroup group_cs_shutdown_kill_constants Shutdown/kill enums and constants
926  @ingroup group_cs
928  @sa THD::is_killable
929  @{
930 */
931 #define MYSQL_SHUTDOWN_KILLABLE_CONNECT (unsigned char)(1 << 0)
932 #define MYSQL_SHUTDOWN_KILLABLE_TRANS (unsigned char)(1 << 1)
933 #define MYSQL_SHUTDOWN_KILLABLE_LOCK_TABLE (unsigned char)(1 << 2)
934 #define MYSQL_SHUTDOWN_KILLABLE_UPDATE (unsigned char)(1 << 3)
935 
936 /**
937  We want levels to be in growing order of hardness (because we use number
938  comparisons).
940  @note ::SHUTDOWN_DEFAULT does not respect the growing property, but it's ok.
941 */
943  SHUTDOWN_DEFAULT = 0,
944  /** Wait for existing connections to finish */
946  /** Wait for existing transactons to finish */
948  /** Wait for existing updates to finish (=> no partial MyISAM update) */
950  /** Flush InnoDB buffers and other storage engines' buffers*/
952  /** Don't flush InnoDB buffers, flush other storage engines' buffers*/
954  /** Query level of the KILL command */
955  KILL_QUERY = 254,
956  /** Connection level of the KILL command */
957  KILL_CONNECTION = 255
958 };
959 /** @}*/
962  /** No metadata will be sent. */
964  /** The server will send all metadata. */
966 };
967 
973 };
974 
975 /** options for ::mysql_options() */
979 };
980 
981 /**
982  Type of state change information that the server can include in the Ok
983  packet.
985  @note
986  - session_state_type shouldn't go past 255 (i.e. 1-byte boundary).
987  - Modify the definition of ::SESSION_TRACK_END when a new member is added.
988 */
990  SESSION_TRACK_SYSTEM_VARIABLES, /**< Session system variables */
991  SESSION_TRACK_SCHEMA, /**< Current schema */
992  SESSION_TRACK_STATE_CHANGE, /**< track session state changes */
993  SESSION_TRACK_GTIDS, /**< See also: session_track_gtids */
994  SESSION_TRACK_TRANSACTION_CHARACTERISTICS, /**< Transaction chistics */
995  SESSION_TRACK_TRANSACTION_STATE /**< Transaction state */
996 };
998 /** start of ::enum_session_state_type */
999 #define SESSION_TRACK_BEGIN SESSION_TRACK_SYSTEM_VARIABLES
1001 /** End of ::enum_session_state_type */
1002 #define SESSION_TRACK_END SESSION_TRACK_TRANSACTION_STATE
1003 
1004 /** is T a valid session state type */
1005 #define IS_SESSION_STATE_TYPE(T) \
1006  (((int)(T) >= SESSION_TRACK_BEGIN) && ((T) <= SESSION_TRACK_END))
1007 
1008 #define net_new_transaction(net) ((net)->pkt_nr = 0)
1010 bool my_net_init(struct NET *net, MYSQL_VIO vio);
1011 void my_net_local_init(struct NET *net);
1012 void net_end(struct NET *net);
1013 void net_clear(struct NET *net, bool check_buffer);
1014 void net_claim_memory_ownership(struct NET *net);
1015 bool net_realloc(struct NET *net, size_t length);
1016 bool net_flush(struct NET *net);
1017 bool my_net_write(struct NET *net, const unsigned char *packet, size_t len);
1018 bool net_write_command(struct NET *net, unsigned char command,
1019  const unsigned char *header, size_t head_len,
1020  const unsigned char *packet, size_t len);
1021 bool net_write_packet(struct NET *net, const unsigned char *packet,
1022  size_t length);
1023 unsigned long my_net_read(struct NET *net);
1024 void my_net_set_write_timeout(struct NET *net, unsigned int timeout);
1025 void my_net_set_read_timeout(struct NET *net, unsigned int timeout);
1026 void my_net_set_retry_count(struct NET *net, unsigned int retry_count);
1027 
1028 struct rand_struct {
1029  unsigned long seed1, seed2, max_value;
1030  double max_value_dbl;
1031 };
1032 
1033 /* Include the types here so existing UDFs can keep compiling */
1036 /**
1037  @addtogroup group_cs_compresson_constants Constants when using compression
1038  @ingroup group_cs
1039  @{
1040 */
1041 #define NET_HEADER_SIZE 4 /**< standard header size */
1042 #define COMP_HEADER_SIZE 3 /**< compression header extra size */
1043 /** @}*/
1044 
1045 /* Prototypes to password functions */
1046 
1047 /*
1048  These functions are used for authentication by client and server and
1049  implemented in sql/password.c
1050 */
1051 
1052 void randominit(struct rand_struct *, unsigned long seed1, unsigned long seed2);
1053 double my_rnd(struct rand_struct *);
1054 void create_random_string(char *to, unsigned int length,
1055  struct rand_struct *rand_st);
1056 
1057 void hash_password(unsigned long *to, const char *password,
1058  unsigned int password_len);
1059 void make_scrambled_password_323(char *to, const char *password);
1060 void scramble_323(char *to, const char *message, const char *password);
1061 bool check_scramble_323(const unsigned char *reply, const char *message,
1062  unsigned long *salt);
1063 void get_salt_from_password_323(unsigned long *res, const char *password);
1064 void make_password_from_salt_323(char *to, const unsigned long *salt);
1065 
1066 void make_scrambled_password(char *to, const char *password);
1067 void scramble(char *to, const char *message, const char *password);
1068 bool check_scramble(const unsigned char *reply, const char *message,
1069  const unsigned char *hash_stage2);
1070 void get_salt_from_password(unsigned char *res, const char *password);
1071 void make_password_from_salt(char *to, const unsigned char *hash_stage2);
1072 char *octet2hex(char *to, const char *str, unsigned int len);
1073 
1074 /* end of password.c */
1075 
1076 bool generate_sha256_scramble(unsigned char *dst, size_t dst_size,
1077  const char *src, size_t src_size, const char *rnd,
1078  size_t rnd_size);
1079 
1080 // extern "C" since it is an (undocumented) part of the libmysql ABI.
1081 #ifdef __cplusplus
1082 extern "C" {
1083 #endif
1084 char *get_tty_password(const char *opt_message);
1085 #ifdef __cplusplus
1086 }
1087 #endif
1088 
1089 const char *mysql_errno_to_sqlstate(unsigned int mysql_errno);
1090 
1091 /* Some other useful functions */
1092 
1093 // Need to be extern "C" for the time being, due to memcached.
1094 #ifdef __cplusplus
1095 extern "C" {
1096 #endif
1097 bool my_thread_init(void);
1098 void my_thread_end(void);
1099 #ifdef __cplusplus
1100 }
1101 #endif
1102 
1103 #ifdef STDCALL
1104 unsigned long STDCALL net_field_length(unsigned char **packet);
1105 unsigned long STDCALL net_field_length_checked(unsigned char **packet,
1106  unsigned long max_length);
1107 #endif
1108 uint64_t net_field_length_ll(unsigned char **packet);
1109 unsigned char *net_store_length(unsigned char *pkg, unsigned long long length);
1110 unsigned int net_length_size(unsigned long long num);
1111 unsigned int net_field_length_size(const unsigned char *pos);
1112 
1113 #define NULL_LENGTH ((unsigned long)~0) /**< For ::net_store_length() */
1114 #define MYSQL_STMT_HEADER 4
1115 #define MYSQL_LONG_DATA_HEADER 6
1116 #endif
Definition: mysql_com.h:950
unsigned char error
Definition: mysql_com.h:877
char sqlstate[SQLSTATE_LENGTH+1]
Client library sqlstate buffer.
Definition: mysql_com.h:881
Connection level of the KILL command.
Definition: mysql_com.h:964
unsigned int read_timeout
Definition: mysql_com.h:870
unsigned int write_timeout
Definition: mysql_com.h:870
unsigned int pkt_nr
Definition: mysql_com.h:869
SERVER_STATUS_flags_enum
The status flags are a bit-field.
Definition: mysql_com.h:760
void make_scrambled_password_323(char *to, const char *password)
bool generate_sha256_scramble(unsigned char *dst, size_t dst_size, const char *src, size_t src_size, const char *rnd, size_t rnd_size)
Definition: sha2_password_common.cc:386
unsigned long my_net_read(struct NET *net)
Read a packet from the client/server and return it without the internal package header.
Definition: net_serv.cc:1676
Definition: mysql_com.h:976
The server was able to fulfill the clients request and opened a read-only non-scrollable cursor for a...
Definition: mysql_com.h:781
void * extension
Extension pointer, for the caller private use.
Definition: mysql_com.h:890
Flush InnoDB buffers and other storage engines&#39; buffers.
Definition: mysql_com.h:958
Definition: mysql_com.h:1035
#define MYSQL_SHUTDOWN_KILLABLE_TRANS
Definition: mysql_com.h:939
Definition: mysql_com.h:977
Multi query - next query exists.
Definition: mysql_com.h:770
enum_cursor_type
Definition: mysql_com.h:975
mysql_enum_shutdown_level
We want levels to be in growing order of hardness (because we use number comparisons).
Definition: mysql_com.h:949
struct NET NET
unsigned long seed2
Definition: mysql_com.h:1036
unsigned int net_field_length_size(const unsigned char *pos)
length of buffer required to represent a length-encoded string give the length part of length encoded...
Definition: pack.cc:177
void make_password_from_salt_323(char *to, const unsigned long *salt)
bool net_write_command(struct NET *net, unsigned char command, const unsigned char *header, size_t head_len, const unsigned char *packet, size_t len)
Send a command to the server.
Definition: net_serv.cc:748
Session system variables.
Definition: mysql_com.h:997
bool check_scramble_323(const unsigned char *reply, const char *message, unsigned long *salt)
#define STDCALL
Definition: my_compiler.h:147
void my_net_set_retry_count(struct NET *net, unsigned int retry_count)
Definition: net_serv.cc:1827
void scramble_323(char *to, const char *message, const char *password)
enum_resultset_metadata
Definition: mysql_com.h:968
unsigned char reading_or_writing
Definition: mysql_com.h:873
To mark ResultSet containing output parameter values.
Definition: mysql_com.h:799
Is raised when a multi-statement transaction has been started, either explicitly, by means of BEGIN o...
Definition: mysql_com.h:768
bool compress
Definition: mysql_com.h:875
unsigned int * return_status
Definition: mysql_com.h:872
#define rnd(X)
Definition: mi_test3.cc:42
Transaction chistics.
Definition: mysql_com.h:1001
double max_value_dbl
Definition: mysql_com.h:1037
unsigned long buf_length
Definition: mysql_com.h:867
#define SQLSTATE_LENGTH
Definition: mysql_com.h:75
unsigned int net_length_size(unsigned long long num)
Definition: mysql_com.h:771
my_socket fd
Definition: mysql_com.h:861
Server in auto_commit mode.
Definition: mysql_com.h:769
bool net_realloc(struct NET *net, size_t length)
Realloc the packet buffer.
Definition: net_serv.cc:179
const char * mysql_errno_to_sqlstate(unsigned int mysql_errno)
Definition: sql_state.cc:42
unsigned int compress_pkt_nr
Definition: mysql_com.h:869
char * pos
Definition: do_ctype.cc:76
bool my_net_init(struct NET *net, MYSQL_VIO vio)
Wait for existing updates to finish (=> no partial MyISAM update)
Definition: mysql_com.h:956
See also: session_track_gtids.
Definition: mysql_com.h:1000
void my_net_local_init(struct NET *net)
Definition: sql_client.cc:38
Set at the same time as SERVER_STATUS_IN_TRANS if the started multi-statement transaction is a read-o...
Definition: mysql_com.h:808
void create_random_string(char *to, unsigned int length, struct rand_struct *rand_st)
ulong STDCALL net_field_length(uchar **packet)
Definition: pack.cc:37
ulong STDCALL net_field_length_checked(uchar **packet, ulong max_length)
Definition: pack.cc:60
bool my_net_write(struct NET *net, const unsigned char *packet, size_t len)
Write a logical packet with packet header.
Definition: net_serv.cc:398
double my_rnd(struct rand_struct *)
Generate random number.
Definition: my_rnd.cc:53
Current schema.
Definition: mysql_com.h:998
char last_error[MYSQL_ERRMSG_SIZE]
Client library error message buffer.
Definition: mysql_com.h:879
Wait for existing connections to finish.
Definition: mysql_com.h:952
#define MYSQL_SHUTDOWN_KILLABLE_UPDATE
Definition: mysql_com.h:941
unsigned char * write_pos
Definition: mysql_com.h:860
unsigned long where_b
Definition: mysql_com.h:867
unsigned char * net_store_length(unsigned char *pkg, unsigned long long length)
char * get_tty_password(const char *opt_message)
Definition: get_password.cc:145
unsigned int STDCALL mysql_errno(MYSQL *mysql)
Definition: client.cc:8159
void my_net_set_read_timeout(struct NET *net, unsigned int timeout)
Definition: net_serv.cc:1813
Definition: mysql_com.h:978
#define MYSQL_ERRMSG_SIZE
Max length of a error message.
Definition: mysql_com.h:833
#define MYSQL_SHUTDOWN_KILLABLE_CONNECT
Definition: mysql_com.h:938
bool net_write_packet(struct NET *net, const unsigned char *packet, size_t length)
Write a MySQL protocol packet to the network handler.
Definition: net_serv.cc:1168
bool check_scramble(const unsigned char *reply, const char *message, const unsigned char *hash_stage2)
unsigned long max_packet_size
Definition: mysql_com.h:868
void make_scrambled_password(char *to, const char *password)
Definition: password.cc:250
unsigned int last_errno
Definition: mysql_com.h:876
unsigned long length
Definition: mysql_com.h:867
Definition: violite.h:324
bool my_thread_init(void)
Allocate thread specific memory for the thread, used by mysys and dbug.
Definition: my_thr_init.cc:268
Don&#39;t flush InnoDB buffers, flush other storage engines&#39; buffers.
Definition: mysql_com.h:960
unsigned long seed1
Definition: mysql_com.h:1036
int my_socket
Definition: my_io_bits.h:59
bool net_flush(struct NET *net)
Flush write_buffer if not empty.
Definition: net_serv.cc:246
void get_salt_from_password_323(unsigned long *res, const char *password)
The server will send all metadata.
Definition: mysql_com.h:972
A database was dropped.
Definition: mysql_com.h:787
void scramble(char *to, const char *message, const char *password)
Produce an obscure octet sequence from password and random string, received from the server...
Definition: password.cc:270
void make_password_from_salt(char *to, const unsigned char *hash_stage2)
unsigned char * buff
Definition: mysql_com.h:860
Definition: mysql_com.h:985
unsigned int retry_count
Definition: mysql_com.h:870
void randominit(struct rand_struct *, unsigned long seed1, unsigned long seed2)
Definition: password.cc:81
Definition: mysql_com.h:788
void my_thread_end(void)
Deallocate memory used by the thread for book-keeping.
Definition: my_thr_init.cc:303
command
Definition: version_token.cc:278
Transaction state.
Definition: mysql_com.h:1002
Definition: mysql_com.h:772
Definition: mysql_com.h:984
unsigned char save_char
Definition: mysql_com.h:874
enum_session_state_type
Type of state change information that the server can include in the Ok packet.
Definition: mysql_com.h:996
uint64_t net_field_length_ll(unsigned char **packet)
Definition: pack.cc:89
unsigned long max_value
Definition: mysql_com.h:1036
void net_claim_memory_ownership(struct NET *net)
Definition: net_serv.cc:175
This flag is sent when a read-only cursor is exhausted, in reply to COM_STMT_FETCH command...
Definition: mysql_com.h:786
MYSQL_VIO vio
Definition: mysql_com.h:859
#define MYSQL_VIO
Definition: mysql_com.h:847
Definition: mysql_com.h:795
Common #defines and includes for file and socket I/O.
No metadata will be sent.
Definition: mysql_com.h:970
Types to make file and socket I/O compatible.
unsigned char * buff_end
Definition: mysql_com.h:860
int fcntl
Definition: mysql_com.h:871
unsigned long remain_in_buf
Set if we are doing several queries in one command ( as in LOAD TABLE ...
Definition: mysql_com.h:867
static char * password
Definition: mysql_secure_installation.cc:55
Definition: mysql_com.h:979
void get_salt_from_password(unsigned char *res, const char *password)
Query level of the KILL command.
Definition: mysql_com.h:962
track session state changes
Definition: mysql_com.h:999
void my_net_set_write_timeout(struct NET *net, unsigned int timeout)
Definition: net_serv.cc:1820
Wait for existing transactons to finish.
Definition: mysql_com.h:954
void net_clear(struct NET *net, bool check_buffer)
Clear (reinitialize) the NET structure for a new command.
Definition: net_serv.cc:233
unsigned char * read_pos
Definition: mysql_com.h:860
bool length(const dd::Spatial_reference_system *srs, const Geometry *g1, double *length, bool *null) noexcept
Computes the length of linestrings and multilinestrings.
Definition: length.cc:75
This status flag, when on, implies that one of the state information has changed on the server becaus...
Definition: mysql_com.h:814
Definition: mysql_com.h:858
unsigned long max_packet
Definition: mysql_com.h:868
Sent to the client if after a prepared statement reprepare we discovered that the new statement retur...
Definition: mysql_com.h:794
enum_mysql_set_option
options for mysql_options()
Definition: mysql_com.h:983
void hash_password(unsigned long *to, const char *password, unsigned int password_len)
Definition: password.cc:99
void net_end(struct NET *net)
Definition: net_serv.cc:162
char * octet2hex(char *to, const char *str, unsigned int len)
Definition: password.cc:138